New results from the T2K experiment

par Dr Claudio Giganti (LPNHE IN2P3/CNRS)

vendredi 13 déc. 2013, 14:00 → 15:00 Europe/Paris

Auditorium M. Vivargent (LAPP)

The T2K experiment is a long-baseline neutrino oscillation experiment located in Japan. Its main goal is to measure \theta_{13}, the smallest mixing angle in the lepton sector, by observing \nu_e appearance in a \nu_{\mu} beam. It also aims to make a precision measurement of the oscillation parameters, \Delta m^{2}_{23} and sin^{2} \theta_{23}, via \nu_{\mu} disappearance. The experiment uses an intense proton beam generated by the J-PARC accelerator in Tokai, Japan, and it profits of the off-axis technique to produce a narrow band beam centered at the maximum of the oscillation. Neutrinos are observed at a near detector complex (ND280), before the oscillations, and at the far detector (Super-Kamiokande) located 295 km away from J-PARC. The T2K oscillation analysis strategy and the most recent oscillation results including the first observation of the \nu_e appearance process will be presented. Also the prospects of the experiment for the measurement of CP violation and mass hierarchy will be shown.

Slides AnnecySeminar.pdf